Book-lock



S. SALOP.

BOOK LOCK. APPLICATION FILED APR. 30, 1920.

1,349,857. atented Aug- 17,1920,

She/e72 Jalo u ATTORNEY UNITED STATES STEVEN SALOP, F YOUNGSTOWN, OHIO.

BOOK-LOCK.

Application filed April 30, 1920.

To all whom it may concern Be it known that I, S'rnvEN SALor, citizen of the United States, residing at Youngstown, Haselton Station, in the county of Mahoning and State of Ohio, have invented 'certain new and useful Improvements in Book-Locks, of which the following is a specification.

This invention relates to book looks, and has for its object the provision of means for preventing access to the contents of the book inclosed thereby, unless a key is first used to unlock the book inclosing means.

A further object of this invention is to provide means whereby the locking device may be adjusted to hold books of various thicknesses, or to encompass several books of the same length and width.

To attainthe aforesaid and other objects, I employ the device shown in its preferred form in the accompanying drawings, in which- Figure 1 is a perspective View of a book and of my device in the locked position thereof.

Fig. 2 is a plan view of my device as it appears when unlocked and opened out into its unfolded position ready for the reception of a book.

Fig. 3 is a vertical section taken through the lock and book approximately on line 33 of Fig. 1.

Fig. 1 is a horizontal section taken through the lock approximately on line 4- 1 of Fig. 3.

Fig. 5 is a vertical section of the means for adjusting my device to books of various thicknesses.

A bottom member 10, on which the book 11 rests, is made in the form of a cross, having main arms 13, the distance between the ends of which is slightly greater than the width of the book, and having branch arms 12, in which the distance between the ends is slightly greater than the length of the book to be locked. Adjustable sections 15, which will be described more fully hereinafter, are all similarly constructed, and serve to connect the various arms of lower member with the upper locking sections by means of hinges 16, said sections 15 being connected to said lower member 10 by means of hinges as 1 1.

For forming a complete locking strap lengthwise of the book, upper locking sections 17 are hinged to adjustable sections 15,

Specification of Letters Iatent.

Patented Aug. 17, 1920.

Serial No. 377,767.

each of said locking sections having a hole 18 near the end thereof adapted to engage pin 19 secured near the end of upper locking section 20. Said pin 19 is made long enough to pass through holes 18 of members 17 and to project through said holes an amount sufficient to allow said pin to engage part of the locking structure 22, carried by upper arm 21, when the various sections and arms are folded around the book, a hole 23 being provided near the end of arm 21 through which said pin may be passed.

A lock structure 22 is secured to the end of arm 21, a keyhole 21 being cut in the upper face of said lock, and a locking catch 25, pivoted on pin 26, being arranged to be pressed into slot 27 in the upper end of pin 19 when the various parts are folded up, due to the action of spring 28.

Vertical sections 15 are each made in two parts, one part 28 being hinged to the upper foldable members of my device by hinge 16 and the other part 29 being hinged to the end of the stationary cross 10 by hinge 1 1. Part 29 has a projecting shoulder 30 at its upper end, to which is fastened pin 31, having knob 32 at the end thereof. A vertically disposed slot 33 is cut in part 28 to allow pin 31 to pass through and to be adjusted vertically with respect to said part, and on the inner face of said member 28, a series of horizontally arranged depressions are cut partly through the member, said depressions being made wide enough on each side of slot to receive shoulder 30 of part 29.

To adjust the parts 28 and 29 to take books of different thicknesses, knob 32 is pressed inwardly, removing shoulder 30 from that one of depressions 34. with which it happens to be in engagement, whereby part 29 is swung slightly backwardly about hinge let. After disengaging shoulder 30 from depression 34, a downward pressure on knob causes part 29 and the cross 10 attached thereto to move downwardly relatively to part 28, shoulder 30 engaging another one of depressions 34 when the pressure on knob 32 is released. The remaining sections 15 may be similarly adjusted.

To look up a book, arm 20 is first folded about its hinge 16 through an angle of approximately 180", so that section 15 attached thereto assumes a vertical position, (Fig. 1) and pin 19 an upstanding position. Arms 17 are now similarly folded, pin 19 engaging holes 18. The last member to be part can be unfolded.

It will be seen that a book held by my improved lock cannot be opened sufliciently to have any portion of the contents read. or tampered with, and can be usedto advantage with loose leaf and other types of account books in general commercial use.

I claim: l

1. A book lock comprising a rigid cross shaped member, sections adjustable to the thickness of a book each comprising two non-rotatable but relatively movable parts, hinges joining one of the parts of each of said sections to one end of said member, a series of upper foldable arms, hinges joining each of the other of said parts to oneend of each of said'arms, and means for locking the other ends of said arms together.

2. In a book lock, a rigid cross shaped member, sections adjustableto the thickness of a book each comprising a slotted part havinghorizontaldepressions therein, an inner part having shoulders thereon for engaging said depressions and a pin passing through said slotted part and attached to said lnner part for pushing on said innerpart to disengage said parts :from each other transversely,-

hinges joining the lower end of each of said inner parts to an endof said cross shaped member, hinges joining the upper ends of each of said slotted parts to an end of each of said arms, and means for locking the.

other ends of said arms together.

3. In a book lock, a rigid member, foldable arms, adjustable foldable means connecting. said arms and said rigid member, each comprising a slotted part hinged to one of said arms and having horizontal depressions :therem, an inner part hinged to the rigid member, a shoulder at the upper end or a said inner part adapted to engage said depressions, and a pin passlng through said slotted part for'manipulating said inner )art and means for lockin said arms to getlier.

In testimony whereof I have afiixed my signature this 24th day of April, 1920.

STEVEN SALOP. 

